Formaldehyde fumigating apparatus.



R. I. LBAGH L A. T. BEALL.

PORMALDEHYDE FUMIGATING APPARATUS.-

APPLICATION FILED JAN. 22, 1913.

1,0789 1 3, Patented Sept. 23, 1913.

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R. I. LEAGH & A. T. BEALL.

PORMALDBHYDE PUMIGATING APPARATUS.

APPLICATION FILED JAN. 22, 1913.

1 ,078,9 1 3, Patented Sept. 23, 1913.

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ROY I. LEACI-I AND ANDREW T. BEALL, OF SALEM, OHIO.

FORMALDEHYDE FUMIGATING APPARATUS.

Specification of Letters Patent.

atented Sept. 23, Li 913.

Application filed January 22, 1913. Serial No. 743,607.

To oil whom t may concern,

Be it known that we, lier l. .Ln-terr and ANDREW T. Beam., citizens of the United States, residing at Salem, in the county of Columbiana and State of Ohio, have invented certain new and useful Improvements in Formaldehyde liumigating Apparatus, of which the following' is a speoiiieation, reierencc being had to the accompanying drawings.

This invention comprehends certain new and useful improvements in iinnigating apparatus and relates more specifically to that class of fumigators in which formaldehyde solution is employed.

An object of the invention is to provide a fui'nig'ator having a removable container in which formaldehyde solution may be positioned below the surface o1 the suitable fluid within an outer member and a peritorated cover through which the fumes may escape.

Another object is to construct a device oi this character between the parts olf4 which air tight connections will be formed, thus compelling the fumes to escape through the perforated cover.

Another object is to generally improve and simplify the construction oit the device of this character' and increase the etliciency and comniercial value of the same.

l/Vith these and other objects in view, this invention consists oit' certain novel details of construction, combination and arrangement of parts to be hereinailiter more :fully described, claimed and illustrated in the accompanying drawings, in which- Figure 1, is an elevational view oi the complete device, parts oil' the tank and cover being broken away to clearly show the parts within said tank and cov-er. Fig. 2, is a horizontal cross sectional view through the cover. Fig. 3, is a horizontal cross sectional view through the container. Fig. 4;, is a t'ragmentary top plan view, showing the bowed spring clamping member in posi tion. Fig. 5, a view similar' to liig. it with the bowed springI clamping member removed. Fig. 6, is a cross sectional view on the line GMG oit Fig. l. Fig. 7 is a fragmentary sectional view through the sleeve and the roughened portion of the spherical cover.

Referring more particularly t0 the drawings in which like reference characters designate corresponding parts thoughout the several views, il. designates the tank .which is preferably ol cylindrical lorm and constructed oi copper or other suitable 1naterial and provii'lcd with a convex bottom 2, the edge oi which is flared outwardly of the tank 1 to ilorm the supporting llange 4t. 'lhe supporting [lange 'l, as shown, is provided with t'he spaced openings 5 to reduce the weight of the same without sacrilicing the strength thcreoi and also for the purpose of allowing the fumes t0 tind their way beneath the bottom 2, as will be later clearly understood.

lt will be understood that the upper end ot the tank 1 is opened and the bearing rings t3 are positioned at the upper end oi the tank, the lower ring t3 resting upon the knobs 7 secured upon the tank at the upper end thereol and positioned at diametrically opposite points.

The knobs i' may be secured to the tank 'l in any suitable manner and are provided with central openings to receive the inwardly directed lower ends S ot the bowed spring clamping member t) around the central portion ol? which is secured the sleeve l() to which the handle l1 is also positioned.

The iormaldehyde container 112 is preferably of circular torni in cross section and tapered toward its upper open end while the lower end is closed and has the semi spherical portions 13 pressed upwardly from its under face, to allow the :lorn'ialdehyde rest-in01 upon the bottom oi' the container to be more readily healed, as will be clearly understood. lhe container 1Q is also preferably :formed oi copper or other heat conducting material.

lhe upper end olt the formaldehyde container .l2 secured in the lower portion of the perforated spherical cover 1l, the greatest diameter ol"- which is greater than the diameter of the tank l.. The spherical cover lll rests upon the bearing rings` (3 and is clamped upon said rings by means oi. the spring clamping member t) engaged thereon, the sleeve l() having a roughened under face 10 lor engagement with the roughened depressed portion 15 `upon the upper face of the spherical cover let, thus preventing movement oit said cover. lt will be understood that a lower-most portion oi the spherical cover 111 depends into the upper end of the tank 1, as clearly shown in Fig. 1. It will be understood that the lowermost portion oi the spherical cover 14, within the the outer 'face of upper end of the tank 1, is not perforated, thus eliminating all possibility of the fumes entering the tank 1 and compelling said fumes to escape through the perforations in the spherical cover 14, Vabove the tank 1.

The formaldehyde solution is placed in the container 12 through the feed tube 16 positioned vertically in the spherical cover 14 and having its lower end depending int-o the container 12 while its upper end is seicured in the upper portion of the spherical cover 14, said upper end being threaded as shown at 17 to receive the threaded plug 18 by means of which the upper end of the tube may be closed.

l/Vhen it is desired to use this device, the spring clamping member is disengaged from the spherical cover 14 and the latter removed, after which the tank l is filled with boiling water to within a spaced distan-ce of the upper end of the tank. llhe spherical cover 111 is then replaced and the clamping member 9 engaged with the same, the formaldehyde container 12 displacing the water suiiiciently to cause said water to rise to about the top of the tank. The screw plug 18 is then removed and a small quantity of formaldehyde solution poured through the tube 16 into the container 12, about one-half ounce of formaldehyde solution being asuflicient amount for ordinary purposes. rEhe screw plug 18 is then re- I placed and it will be understood that the fumes will readily escape through the perforations in the spherical cover la, com-v pletely filling the room or the inclosure in which the device is positioned and killing all germs therein.

It will be understood that during the operation of properly placing the tank 1, removing the screw cap 18, placing the formaldehyde solution in the container 12 and replacing the screw cap 18, the temperature of the water will decrease to about 180 degrees. As the tank 1 and container 12 are formed of copper or the like, and there is no means of escape for the air, the temperature of about 160 degrees will be maintained and the formaldehyde vapor delivered at a temperature which insures its utnov/3,913'

most eliiciency and the entire strength of the charge is delivered in from 15 to 20 minutes.

While we have shown the preferred embodiment of our invention, it will be understood that we do not wish to be limited to this specific form, as minor changes in the details of construction may be made within the scope of the appended claims without depart-ing from the spirit of our invention.

What is claimed is 1. A disinfect-ing device comprising a tank, a container within the tank and having portions of its bottom pressed upwardly, a cover for the tank, the upper end of the container being secured in the cover, means for forming an air tight joint be tween the cover and tank, and means can Y ried by the tank for clamping the cover inv position. v

2. A disinfecting device comprising a tank, a spherical cover having a portion thereof positioned in the upper end of the tank, the remaining portion of the cover being perforated, means for forming air tight connections between the cover and tank, a formaldehyde container suspended from the cover and within the tank, and means for securing the cover in position.

3. A disinfecting device comprising a tank, a spherical cover for the tank, the

ROY 1. LEACH. ANDREW T. BEALL.

W'itnesses: y f

THEODORE A. BEALL, R. C. KRIDLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

